Here are some brachiopods I saw earlier in the week in Nashville, Tennessee. I am guessing they are from either the Nashville or Maysville Groups in the Ordovician Period. This first brachiopod might be a
Resserella (aka
Dalmanella).

These next brachiopods might be
Lepidocyclus (Orthorhynchula).
This might be the bottom half of a
Hebertella brachiopod.

Maybe a
Lepidocyclus brachiopod.

Again another mixture of
Lepidocyclus brachiopods.

Some sort of
Resserella or
Hebertella brachiopods.

Thanks to the website at www.nashvillefossils.com for help with identification.